/*
 * Copyright (C) 2024 panpf <panpfpanpf@outlook.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.github.panpf.sketch.source

import com.github.panpf.sketch.Sketch
import com.github.panpf.sketch.util.Uri
import okio.IOException
import okio.Path
import okio.Source

/**
 * A [DataSource] that provides access to image data represented by a BlurHash uri.
 *
 * @see com.github.panpf.sketch.blurhash.common.test.source.BlurHashDataSourceTest
 */
class BlurHashDataSource constructor(val blurHashUri: Uri) : DataSource {

    override val key: String = blurHashUri.toString()
    override val dataFrom: DataFrom = DataFrom.MEMORY

    @Throws(IOException::class)
    override fun openSource(): Source =
        throw UnsupportedOperationException("BlurHash not supported for open Source")

    @Throws(IOException::class)
    override fun getFile(sketch: Sketch): Path =
        throw UnsupportedOperationException("BlurHash not supported for getFile")

    override fun equals(other: Any?): Boolean {
        if (this === other) return true
        if (other == null || this::class != other::class) return false
        other as BlurHashDataSource
        if (blurHashUri != other.blurHashUri) return false
        return true
    }

    override fun hashCode(): Int {
        return blurHashUri.hashCode()
    }

    override fun toString(): String = "BlurHashDataSource(blurHashUri='$blurHashUri')"
}